Cloth-cutting machine.



lo. 892,460. PATENTED JULY '7, 1908. A. SPIELMAN. OLGTH CUTTING MACHINE.

APPLICATION FILED NOV.13,1907.

2 SHEETSSHEET 1.

ATTORNEY.-

PATENTRD JULY '7, 1908.

A. SPIELMAN. CLOTH CUTTING MACHINE.

APPLIGATION'PILED NOV.13,1907.

2 SHEETS-SHEET 2.

T 0 all whom 'it may concern.'

ADOLPH SPIELMAN, OF I)IIILADILPIIIA, PENNSYLVANIA.

CLOTH-CUTTING- MACHINE.

Specification of Letters Patent.

Patented July 7, 1908.

Application filed November 13, 1907. Serial Ne. 401,910.

Be it known that I, ADoLrn Srinmmx, a citizen of the United States,residino at Philadelphia, in the county of Philadenllihia and State ofPennsylvania, have invented certain new and useful Improvements inCloth- Cutting Machines, of which the following is a specification.

This invention relates to devices of that class used for cutting clothor other textiles in the manufacturing of clothing and other goods orfabrics, and has for its principal objectto provide a machine of thischaracter of a slmp e and inexpensive nature, and of a strong, compact,and durable construction that is not lliable to become deranged orbroken in use.

A further object is to providca machine of this character having cuttingdevices'of an improved and novel character adapted to permit of cuttingmaterials in any desired direction in a true and accurate manner.

A Still further object is to provide an endless cutting band having itsruns adapted to move 1n opposite directions, and having means forcausing one of the runs of said endless knife to pass backward and outof alinement with the opposite portion of the knife when cutting.

A still'further object of the invention is te provide certain novelfeatures of construction and combinations of parts of the cloth cutter.

Other objects will appear hereinafter.

The invention consists of the improvements hereinafter described andfinally claimed.

The nature, characteristic features, and scope of the invention will bemore fully understood from the following description taken in connectionwith the accompanying drawings forming part hereof, and in which vFigure1, is a side elevational view of a cloth cutting machine embodying theinven tion. Fig. 2, is a front elevational view of the same, partly insection. Fig. 3, is a fragmentary view in plan of the base plate. Fig.4, is a view in cross section of the standard of the machine, andillustratingl the two runs of the endless knife in their relativepositions. Fig. 5, is a plan view partly in section of rollers andsheaves beneath the base late. 6, is a sectional view of one of the allbeari rollers, and Figs. 7, and 8, are views ofen less kniveshereinafter' referred to.

AIteferring to the drawings, the improved cutting machine comprises abase plate 1, provided on its under side with a chamber 2, adapted tohouse certain devices hereinafter referred to. The base plate is ofgenerally rectangular form, and has its side walls inclined (.lownwardlyso as to permit the base to be readily slipped beneath the cloth to becut. The base plate 1, is provided with wheels or rollers 3, theeripheries of which extend slightly below tlie underside ofthe inclinedwalls of the base plate. Rising from the base plate 1, is a somewhatNi-shaped standard which comprises side walls/1, and a central partition5, which thus forms a air of channels 6, the object of which wil behereinafter described. This standard carries a motor supporting frame,comprising aV pair of upright arms 7, terminating in a horixontalextension 8.' Mounted between these arms is 'a motor which may be of anyordinary construction, and comprises an armature l0, held upon a shaft11, and a field 12.

The ends of the armature shaft are j ournaled as indicated at 15, in theupright arms 7, of the before described frame. Keyed to the forward. endof the armature shaft 11, is a main driving wheel 15, over which isadapted to pass the upper bight 17, of an cndlesscutting band or knife.The wheel has a 'flange '16, at its rear side to prevent the cuttingband from slipping back against the frame during the operation of themachine. Below the driving wheel the two runs 18, of the cutting bandare carried down toward each other and between idler-sheaves 19. Theidler-sheaves are carried by one of the arms 7, of the standard and asshown comprise rollers 2() which are held to turn loosely on studs 21carried between plates 22, ball bearings being present to facilitate themovenient of the roller. The roller as a whole is provided with aneccentric pin 2G, whereby the rollers may be caused to advance toward oraway from each other and secured by the thumb nut 27. Below thc saidsheaves the two runs of the cutting band are extended downward inparallelism and closely adjacent to each other through the aforesaidchannels t5, of the standard, the said runs beingl separated by thepartition 5. In the base plate of the machine there are slots 33, whichafford access to the hollow chamber, in order that the lower bight 28,of the endless knife may be inserted. Access may be had to this slot byremoving the front piece 24, of the base plate. In the chamber 2, of

the base plate l, are arranged a plurality of 5 Wheels or rollers 25,constructed as the above i described idleisheaves and adapted to -reiceive the lower bight or' the endless knife and i there are also otherWheels or idler-sheaves ,i 29 and 30, spaceda art to receive betweentliein the tivo runs o the cutting band. One I of these idler-sheaves,shown as 20, is bev Ii eled, as illustrated, in order to throw the. uplWard movingI run of' the cutting band baclr- Ward out of alinenient withthe cutting edge of the opposite run and cause it to pass eni tirelyWithin one of the channels (i, ol' the 4i standard. Thus the dowmvardmoving run l of the knife cuis the work presented, which obviously isadvantageous. The rollers oi!l the said sheaves are of the ball bearingval riety, but are notarranged eceentrically. l

'llie endless knife may-be perfectly plain, as shown in Fig. l, or maybe perforated at i 32, as shown in Fig, S, or may be oll leather, orsimilar flexible material, as shown in Fig. 7, and provided with aseries of short lrnile sections 31, riveted thi'sreon. ln the case ofusing the perforated band, the main driving` pulley l5, is equipped withprojections 32, that engage the pertorations and serve to cause theendless hni'l'e to niove steadily. ln applying the cutting lband to themachine, the liront piece 24, is removed and the lower bight of Vtheendless knife is passed through the slots 33, Within the chamber 2, and.passed around the several rollers and idlersheaves, and the upper bightof the endless band is then passed over the main driving` Wheel, the tworuns or' the band being passed through the channeled standard andbetween the idler-sheaves 19, whereupon the i band may be drawn to thedesired tension by means ot' the eccentrically arranged rollers 25, andidler-sheaves 1S), and the front plate adjusted to place.

The machine may be equipped With a handle 34, and with an .incandescentlight 35, l shown as being carried by the horizontal p or- ,l

tion 8, of the motor trarne.

The motor may be connected With a source of supply by means of theconductors 36,

37, isa presser foot that may be adjustg ably mounted upon the standardof the niachine as shown.. l Jl/'hat claim is: l. In a machine of theclass described the l combination of an endless band having a continuouscutting edge, nieans i'or causing the opposite sides or runs of saidband to ,l

ceases travel endwise in reverse directions at the point ofpresentationof the Work to be done, and means for causing the cutting edge ot one'of the sides or runs of said band `to pass rearward and backward out ofalinenient with the cutting edge of the o posite side at the said pointWhere presentedpto the VVOl.

2. lna inaehine of the class described the eonibination oiE a standardrovided with channels arranged .in paralle isni having a partitiontherebetween, an endless band having a continuous cutting edge theonpo-' site sides or runs of which are adapted 'tor endivise travelthrough said chf-.ine s in reverse directions,1 means for operating andguiding said band, and means for causing the cutting edge et one of thesides or runs lf said band to pass rearward and backi ward out oialinement with the cutting edge et the opposite side at the point Wherepresented to the Work to be done. i

ln. a machine ot the class described the combination oi a base plate, astandard hav ing partitioned channels rising therefrom, an endlesscutting band the runs which adapted for endwise passage throieh saidchannels, a driving Wheel carried the upper end of said standard and adrd 'to receive the upper bight oi the endless cutting band, a pluralityoi. rollers beneath lthe base plate adapted to receive the lower bightet said cutting band, eccentrie'means ifor rnoving said rollers towardor away freni each other, idler-sheaves carried by the standard andarranged to guide the band to the said channels, and eccentric means torcausing the said rollers and sheaves to advance to- Ward or away freineach other.

4t. In a cutting machine the combination of a base late, an endlesscutting band having a big` it below the base plate, a pair of sheavestor the said bight, and a pair of idler-sheaves arranged to bear on thetwo runs of said cutting band, Wherco'l474 one of said idler-sheaves isinclined. to throw the cutting edge et the band rearward and ont ofalineinent with the cuttingedge of the opposite run Where presented tothe Work.

in testimony whereof l have hereunto signed iny naine,

ADULPH SPIELMAN.

Vfitnesses:

W. J. JACKSON; CLIFFORD K. CAssnL.

